import java.util.HashSet;
import java.util.Stack;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: hp
 * Date: 2024-05-09
 * Time: 13:47
 */
public class Test {
    public static void main(String[] args) {

    }

    /*public static void main1(String[] args) {
        HashSet<Character> set = new HashSet<>();
        String s = "abcdefg";
        char ch = 'g';
        for (int i = 0; i < s.length(); i++) {
            set.add(s.charAt(i));
        }
        if(set.contains(ch)) {
            System.out.println(true);
        }
    }*/
}
